Patterned mist deposition of tri-colour CdSe/ZnS quantum dot films toward RGB LED devices

S. Pickering, A. Kshirsagar, J. Ruzyllo, J. Xu

Research output: Contribution to journalArticlepeer-review

21 Scopus citations

Abstract

In this experiment a technique of mist deposition was explored as a way to form patterned ultra-thin-films of CdSe/ZnS core/shell nanocrystalline quantum dots using colloidal solutions. The objective of this study was to investigate the feasibility of mist deposition as a patterning method for creating multicolour quantum dot light emitting diodes. Mist deposition was used to create three rows of quantum dot light emitting diodes on a single device with each row having a separate colour. The colours chosen were red, green and yellow with corresponding peak wavelengths of 620 nm, 558 nm, and 587 nm. The results obtained from this experiment show that it is possible to create multicolour devices on a single substrate. The peak brightnesses obtained in this experiment for the red, green, and yellow were 508 cd/m, 507 cd/m, and 665 cd/m, respectively. The similar LED brightness is important in display technologies using colloidal quantum dots in a precursor solution to ensure one colour does not dominate the emitted spectrum. Results obtained in-terms of brightness were superior to those achieved with inkjet deposition. This study has shown that mist deposition is a viable method for patterned deposition applied to quantum dot light emitting diode display technologies.

Original languageEnglish (US)
Pages (from-to)148-152
Number of pages5
JournalOpto-electronics Review
Volume20
Issue number2
DOIs
StatePublished - Jun 2012

All Science Journal Classification (ASJC) codes

  • Radiation
  • Electrical and Electronic Engineering

Fingerprint Dive into the research topics of 'Patterned mist deposition of tri-colour CdSe/ZnS quantum dot films toward RGB LED devices'. Together they form a unique fingerprint.

Cite this